US9047062B2 - Multi-configurable switching system using multi-functionality card slots - Google Patents
Multi-configurable switching system using multi-functionality card slots Download PDFInfo
- Publication number
- US9047062B2 US9047062B2 US13/368,045 US201213368045A US9047062B2 US 9047062 B2 US9047062 B2 US 9047062B2 US 201213368045 A US201213368045 A US 201213368045A US 9047062 B2 US9047062 B2 US 9047062B2
- Authority
- US
- United States
- Prior art keywords
- cards
- card slots
- port
- functionality
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active, expires
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/18—Packaging or power distribution
- G06F1/183—Internal mounting support structures, e.g. for printed circuit boards, internal connecting means
- G06F1/186—Securing of expansion boards in correspondence to slots provided at the computer enclosure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/30—Peripheral units, e.g. input or output ports
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R27/00—Coupling parts adapted for co-operation with two or more dissimilar counterparts
- H01R27/02—Coupling parts adapted for co-operation with two or more dissimilar counterparts for simultaneous co-operation with two or more dissimilar counterparts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R29/00—Coupling parts for selective co-operation with a counterpart in different ways to establish different circuits, e.g. for voltage selection, for series-parallel selection, programmable connectors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
Definitions
- Example aspects described herein relate generally to communications equipment, and more specifically to Multi-Configurable Switching System Using Multi-Functionality Card Slots.
- processors such as personal computers, workstations, and servers
- current communications systems are challenged to deliver data to these processors at continually higher speeds.
- Typical communications systems include collections of interconnected access nodes that transfer data with one another. These nodes may be interconnected using one or more network switches.
- Various embodiments of the invention may describe a switching fabric system that may consist of at least one reconfigurable chassis, including multiple interconnected reconfigurable chassis.
- a reconfigurable chassis may comprise one or more multi-functionality card slots, where each multi-functionality card slot is capable of being populated with at least one of a plurality of different types of cards, including port cards and switch cards.
- the reconfigurable chassis may also comprise one or more port card slots.
- a same type of switch card may be inserted in any of the multi-functionality card slots. Furthermore, at least one of the multi-functionality card slots may receive at least two switch cards depending on the physical size of the switch cards.
- the multi-functionality card slots may comprise at least a first set of multi-functionality card slots and a second set of multi-functionality card slots.
- the port card slots and the multi-functionality card slots may be populated with port cards.
- the first set of multi-functionality card slots may be populated with switch cards and the second set of multi-functionality card slots may be populated with port cards.
- the first set of multi-functionality card slots and the second set of multi-functionality card slots may be populated with switch cards.
- each port card may be capable of forwarding a first bandwidth to the switch cards, while in the third configuration each port card may be capable of forwarding a second bandwidth to the switch cards, where the first bandwidth is less than the second bandwidth.
- each port card slot may be populated with a port card capable of forwarding a second bandwidth to the switch cards in the first and/or second set of multi-functionality card slots.
- the switch cards placed in the second set of multi-functionality card slots may be used to double the bandwidth capacity of each port card slot, and in a second application the switch cards placed in the second set of multi-functionality card slots may be used to increase the number of interconnected port card slots by a factor of at least four.
- a plurality of reconfigurable chassis may be interconnected using, for example, a three stage Clos switch fabric structure.
- the first and third stages of the three stage Clos fabric structure may be housed on switch cards that are placed in the first set of multi-functionality cards slots in each chassis, and the second stage of the three stage fabric structure may be housed on switch cards that are placed in the second set of multi-functionality card slots in each chassis.
- the switch cards may also comprise front panel pluggable optics that allow the reconfigurable chassis to interconnect to one or more reconfigurable chassis.
- the switch cards may contain front panel optics that allow the reconfigurable chassis to interconnect to one or more reconfigurable chassis, and traffic from any port card in the plurality of interconnected chassis may be switched to any port card in the plurality of interconnect chassis.
- a first number of the reconfigurable chassis containing both port cards and switch cards may be interconnected together using a three stage switching configuration.
- twice the first number of reconfigurable chassis may be interconnected together using a three stage switching configuration.
- the second system size may have twice the number of port modules as the first system size, and each port module in the first system size may have the same capacity as a port module in the second system size.
- the first system size may contain a first center switch card
- the second system size may contain a second center switch card, where the second center switch card may be twice the physical size of the first center switch card.
- Various other embodiments may comprise populating with at least one of a plurality of different types of cards, including port cards and switch cards, at least one multi-functionality card slot in a first set of multi-functionality card slots and at least one multi-functionality card slot in a second set of multi-functionality card slots in the reconfigurable chassis.
- a first configuration one or more port card slots in the reconfigurable chassis and one or more multi-functionality card slots are populated with port cards.
- the first set of multi-functionality card slots is populated with switch cards and the second set of multi-functionality card slots is populated with port cards.
- the first set of multi-functionality card slots and the second set of multi-functionality card slots are populated with switch cards.
- one or more of the port car slots may be populated with port cards.
- FIG. 1 illustrates an exemplary diagram of a reconfigurable chassis in accordance with an embodiment of the invention.
- FIG. 2 illustrates an exemplary backplane interconnect configuration for a reconfigurable chassis in accordance with an embodiment of the invention.
- FIG. 3 illustrates an exemplary first configuration of a reconfigurable chassis in accordance with an embodiment of the invention.
- FIG. 4 illustrates another exemplary second configuration of a reconfigurable chassis in accordance with an embodiment of the invention.
- FIG. 5 illustrates an exemplary backplane interconnect configuration for the second configuration of the reconfigurable chassis in accordance with an embodiment of the invention.
- FIG. 6 illustrates another exemplary third configuration of a reconfigurable chassis in accordance with an embodiment of the invention.
- FIG. 7 illustrates an exemplary backplane interconnect configuration for the third configuration of the reconfigurable chassis in accordance with an embodiment of the invention.
- FIG. 8 illustrates an exemplary logical switching diagram for the second configuration of the reconfigurable chassis in accordance with an embodiment of the invention.
- FIG. 9 illustrates an exemplary logical switching diagram for the third configuration of the reconfigurable chassis in accordance with an embodiment of the invention.
- FIG. 10 illustrates exemplary connectors that may be used with various embodiments of the invention.
- FIG. 11 illustrates an exemplary configuration of two interconnected reconfigurable chassis in accordance with an embodiment of the invention.
- FIG. 12 illustrates an exemplary configuration of three interconnected reconfigurable chassis in accordance with an embodiment of the invention.
- FIGS. 13A and B illustrate an exemplary configuration of four interconnected reconfigurable chassis in accordance with an embodiment of the invention.
- FIG. 13C illustrates an exemplary chassis layout of four interconnected reconfigurable chassis in accordance with an embodiment of the invention.
- FIGS. 14A and B illustrates an exemplary configuration of eight interconnected reconfigurable chassis in accordance with an embodiment of the invention.
- FIG. 14C illustrates an exemplary chassis layout of eight interconnected reconfigurable chassis in accordance with an embodiment of the invention.
- FIGS. 1 to 14C Various example embodiments of a Multi-Configurable Switching System Using Multi-Functionality Card Slots will be described with respect to FIGS. 1 to 14C .
- FIG. 1 is a diagram depicting a reconfigurable chassis according to one embodiment of the invention.
- the reconfigurable chassis 100 comprises two controller card slots 102 , multiple port card slots 104 , and at least two sets of multi-functionality card slots 106 A and 106 B.
- a common backplane design can be fabricated that will allow various reconfigurable chassis configurations. For example, one such common backplane design is shown in FIG. 2 .
- FIG. 2 shows the ten dedicated port card slots of FIG. 1 and the four multi-functionality card slots of FIG. 1 .
- the ten dedicated port card slots 104 of FIG. 1 may have inserted in them port cards.
- Each of the ten port card slots 104 - 1 to 104 - 10 may contain two electrical port connectors (PC) 204 A and 204 B. If any of the port card slots 204 - 1 to 204 - 10 are used to house full height port cards, and if a single port connector can provide the number of connections needed by a full height port card, then a single port connector (PC) could be used for each of the ten dedicated port card slots and each of the two full height card slots within the second set of multi-functionality card slots.
- PC electrical port connector
- the two card slots in the first set of multi-functionality card slots 106 A in FIG. 1 may have two electrical switch connectors (SC) 206 A and 206 C, as shown in FIG. 2 .
- the two card slots in the second set of multi-functionality card slots 106 B may each have two electrical switch connectors (SC) 206 A & 206 C and two electrical port connectors (PC) 206 B & 206 D.
- a given port card may contain, for example, up to two electrical port connectors that mate with the two electrical port connectors on the electrical backplane.
- a given half-height switch card may contain, for example, one switch connector.
- Two half-height switch cards may be placed in a card slot of the first or second set of multi-functionality card slots 106 A and 106 B (as illustrated in FIG. 6 ). It may be noted that a given full height card slot could be adapted to support two half height cards by using any number of mechanical methods. Although FIG. 6 shows two half-height switch cards placed within a given full-height card slot, additional connectors could be populated within the multi-functionality card slots such that more than two switch cards are able to be placed within a full-height slot.
- each card slot of the first set of multi-functionality card slots 106 A may accept either a port card or two half-height switch cards.
- port cards when port cards are placed in the first set of multi-functionality card slots 106 A, they cannot be connected to any switch card slots as the two card slots of the first set of multi-functionality card slots 106 A have no port connectors (as shown in FIG. 2 ).
- the invention need not be so limited.
- an embodiment of the invention may allow the first set of multi-functionality card slots 106 A to have port connectors.
- Either a port card or two half-height switch cards may be placed in each card slot of the second set of multi-functionality card slots 106 B.
- port cards When port cards are placed in the second set of multi-functionality card slots 106 B, they can be connected to switch cards within the chassis since each of the second set of multi-functionality card slots 106 B contains port connectors.
- Various embodiments of the invention may provide separate connectors on each card slot for electrical power, ground, and communication.
- the exemplary common backplane design shown in FIG. 2 allows for various reconfigurable chassis configurations including those described with respect to FIGS. 3 , 4 , and 6 .
- FIG. 3 illustrates a first configuration where the first and second set of multi-functionality card slots 106 A and 106 B are capable of being populated with port cards. Since there are no switch cards within the first configuration, there are no interconnections between the port cards for this configuration. Alternatively, in the first configuration, each port card may be connected to a dedicated paired port card using an electrical interconnection between paired cards. A paired port card arrangement may be used in an application where one port card of a paired set is used to protect the interfaces and circuitry of the second port card of a paired set.
- the first configuration shown in FIG. 3 may be used for applications where there is no need for the port cards to interconnect with one another except perhaps in a paired configuration.
- this application would be one where each port card is, for example, a simple transponder. That is, each port card contains a single client interface connecting to a single line interface on the same card.
- the application may also be a simple muxponder where a card contains multiple client interfaces that connect to a single line interface on the same card.
- none of the serial interconnect links are used between the port connectors and switch connectors on the backplane.
- FIG. 4 illustrates a second configuration where the first set of multi-functionality card slots 106 A are capable of being populated with switch cards and the second set of multi-functionality card slots 106 B are capable of being populated with port cards.
- the two card slots of the first set of multi-functionality card slots 106 A may each be populated with two half-height switch cards (using some mechanical means), and port cards may be placed in the second set of multi-functionality card slots 106 B and the ten dedicated port card slots 104 .
- the two switch connectors are not used in each of the two card slots of second set of multi-functionality card slots 106 B.
- Each of the 12 port cards in the second configuration are connected to each of the four half-height switch cards in the two card slots of the first set of multi-functionality card slots 106 A via, for example, five (5) serial links.
- the populated cards and active interconnected links between the cards for the second configuration are depicted in FIG. 5 .
- FIG. 6 illustrates a third configuration where the two card slots of the first set of multi-functionality card slots 106 A and the two card slots of the second set of multi-functionality card slots 106 B are each populated with two half-height switch cards (using some mechanical means), and port cards are placed in the ten dedicated port card slots 104 .
- the two port connectors are not used in each of the two card slots of second set of multi-functionality card slots 106 B.
- each of the 10 port cards are connected to each of the eight half-height switch cards via, for example, five (5) serial links.
- the populated cards and active interconnected links between the cards for the third configuration are depicted in FIG. 7 .
- a single reconfigurable chassis can be constructed such that it contains dedicated ports card slots 104 , a first set of multi-functionality card slots 106 A, and a second set of multi-functionality card slots 106 B, where in a first configuration the first and second set of multi-functionality card slots 106 A and 106 B are capable of being populated with port cards, in a second configuration the first set of multi-functionality card slots 106 A are capable of being populated with switch cards and the second set of multi-functionality card slots 106 B are capable of being populated with port cards, and in a third configuration both the first and second set of multi-functionality card slots 106 A and 106 B are capable of being populated with switch cards.
- the second configuration shown in FIG. 4 could utilize, for example, a one-for-three switch card redundancy scheme, where one switch card is used to protect the other three switch cards.
- three switch cards must be capable of supporting the entire usable bandwidth of all twelve port cards, so that when one of the four switch cards fails, there is no loss in usable bandwidth.
- each port card transports 120 Gbps of usable bandwidth
- each serial link may operate, for example, at a rate of 12 Gbps.
- a total of 15 serial links five to each of the three switch cards) would provide a raw bandwidth of 180 Gbps.
- the additional bandwidth beyond 120 Gbps could be used for such purposes as internal overhead and switch “speed up.”
- FIG. 8 shows a logical diagram of the switching configuration corresponding to the second configuration as shown in FIG. 4 .
- Each half-height switch card 812 - 1 to 812 - 4 which may be in first set of multi-functionality card slots 106 A, may contain, for example, a single switch chip 812 A that has 60 inputs and 60 outputs. Any data arriving on any of the 60 inputs of the switch chip 812 A may be switched to any of the 60 outputs.
- the 120 Gbps of client data received on the client input of any of the port cards 810 - 1 to 810 - 12 may be spread across the 20 serial links leaving that port card, and then switched by the four switch cards 812 - 1 to 812 - 4 to one or more other port cards 810 - 1 to 810 - 12 .
- the 120 Gbps of client data received on the client input of a given port card may be spread across the 15 serial links leaving that port card, and then switched by the three non-failed switch cards to one or more other port cards.
- the third configuration shown in FIG. 6 could utilize either a one-for-seven switch card redundancy scheme (where one switch card is used to protect the other seven switch cards), or a two-for-six switch card redundancy scheme (where two switch cards are used to protect the other six switch cards).
- six switch cards must be capable of supporting the entire usable bandwidth of all ten port cards so that when two of the eight switch cards fail there is no loss in usable bandwidth.
- each port card transports 240 Gbps of usable bandwidth
- each serial link may operate at a rate of, for example, 12 Gbps.
- a total of 30 serial links (five to each of the six switch cards) would provide a raw bandwidth of 360 Gbps.
- the additional bandwidth beyond 240 Gbps could be used for such purposes as internal overhead and switch “speed up.”
- FIG. 9 shows a logical diagram of the switching configuration corresponding to the third configuration as shown in FIG. 6 .
- the 240 Gbps of client data received on the client input of a given port card may be spread across the 40 serial links leaving a given port card (five to each of the eight switch cards), and then switched by the eight switch cards to one or more other port cards.
- the 240 Gbps of client data received on the client input of a given port card may be spread across the 30 serial links leaving a given port card (five to each of the six switch cards), and then switched by the six non-failed switch cards to one or more other port cards.
- each port card is capable of forwarding a first bandwidth (120 Gbps)
- each port card is capable of forwarding a second bandwidth (240 Gbps)
- the second bandwidth is two times greater than the first bandwidth.
- the relative bandwidths will depend on capacity of specific types of port cards and switch cards used.
- each switch card could contain additional interconnect capability.
- One method of adding additional interconnect capability to each switch card is to provide optical interconnect capability by way of the front panel of each switch card.
- this optical interconnect capability can be provided by using “front panel pluggable optics.”
- the integrated-optical-transceiver device may be a stand-alone device, or it may be in the form of an active cable.
- the integrated-optical transceiver device will contain an optical receptor that is cable of accepting a pluggable multi-fiber parallel optical cable.
- the integrated-optical transceiver device is in the form of an active cable, the multi-fiber parallel optical cable is permanently connected to the integrated-optical transceiver.
- FIG. 10 Various integrated-optical transceiver devices are shown in FIG. 10 .
- FIG. 11 shows two reconfigurable chassis 1110 and 1120 interconnected using pluggable parallel optics on the front panels of the switch cards.
- the switch capacity on each switch card may need to be doubled in order to support such a configuration.
- the switch chip is now a 120 input by 120 output device (instead of 60 by 60).
- Each switch card now also contains four optical transceiver cages.
- a single chassis system can first be deployed (without the expense of intra-system optics), and later be expanded to a double-chassis system by plugging optical transceiver devices into the pre-mounted electrical connectors contained within the optical transceiver cages on the switch cards.
- FIG. 11 shows two reconfigurable chassis 1110 and 1120 interconnected using pluggable parallel optics on the front panels of the switch cards.
- each optical transceiver is capable of transporting fifteen bidirectional serial links that each operates at, for example, 12 Gbps.
- the total of thirty optical fibers associated with each optical transceiver could be transported using a single parallel fiber cable, so that connected to each switch card are four parallel optical fiber cables.
- the configuration shown in FIG. 11 can operate in a variety of methods.
- One method would be, for example, to allow each chassis to perform its own intra-chassis switching, and forward all inter-chassis information (i.e., data) to the paired chassis.
- Another method would be, for example, to designate the switch cards in one of the two chassis to perform all the switching for both chassis.
- the chassis that is not performing the switching would simply forward all of its information (data) from its client interfaces to the chassis that is performing the switching.
- the switch chips in the chassis that is not performing the switching could be replaced by simpler “forwarding only” devices in order to lower the cost on its switch cards.
- FIG. 11 shows the interconnection of two reconfigurable chassis that are configured using the second configuration shown in FIG. 4
- two chassis using the third configuration may also be interconnected optically in a similar manner.
- the same switch card shown in FIG. 11 may be utilized in all configurations. That is to say, the switch card shown in FIG. 11 can be used in a system containing a single chassis configured in either the second or third configuration, and the same switch card can be used in a system containing optically paired chassis (as shown in FIG. 11 ) where the two chassis are configured in either the second or third configuration.
- FIG. 12 shows a chassis configured in the third configuration optically interconnected to two chassis configured in the second configuration.
- Chassis 1 contains eight switch cards 1210 - 1 to 1210 - 8
- Chassis 2 contains four switch cards 1220 - 1 to 1220 - 4
- Chassis 3 contains four switch cards 1230 - 1 to 1230 - 4 .
- the same switch card type could be used, for example, in all chassis.
- Chassis 2 and Chassis 3 may house port cards that are capable of processing 120 Gbps of client bandwidth
- Chassis 1 may house port cards that are capable of processing 120 Gbps of client bandwidth or 240 Gbps of client bandwidth.
- FIGS. 13A , B, and C show an exemplary interconnection of four chassis by utilizing a three stage switching architecture.
- FIGS. 13A and B show all the switch cards needed to interconnect the four chassis (the port cards are not shown, for simplicity).
- a total of thirty-two half-height switch cards are used in the example switching architecture shown in FIGS. 13A and B.
- FIGS. 13A and B depicts the “unfolded” view of the three stage Clos switch.
- the first and third stages of the Clos switch are housed on the same card. Therefore, for example, switch card 1310 -SC 1 A is the same physical card as switch card 1310 -SC 1 B.
- the 120 ⁇ 120 switch chip on switch card 1 A/ 1 B is logically partitioned into a first 60 ⁇ 60 switch function (used for the first stage, located, for instance, on switch card 1310 -SC 1 A), and a second 60 ⁇ 60 switch function (used for the third stage, located, for instance, on switch card 1310 -SC 1 B).
- Each of the sixteen second stage functions (center stage functions) reside on a separate card in the example embodiment shown in FIGS. 13A , B, and C.
- First and third stages may be connected to the port cards via electrical printed circuit board (PCB) traces (for example, the electrical links shown in FIGS. 13A and 13B that connect to port cards), while the connections between the first and second stages and the connections between the second and third stages may be done using optical interconnects via, for example, front panel pluggable optics).
- PCB electrical printed circuit board
- FIGS. 13A and B four switching planes are used.
- FIG. 13A shows switching planes 1 and 2
- FIG. 13B shows switching planes 3 and 4 .
- Each switching plane is used to switch five of the serial links to and from each port card (for a total of 20 serial links to and from each port card).
- first/third stage switch card 1310 -SC 1 A/B may receive/transmit five serial links from/to each of ten port cards contained within Chassis 1
- first/third stage switch card 1320 -SC 2 A/B may receive/transmit five serial links from/to each of ten port cards contained within Chassis 2 .
- only 20 serial links from each port card are switched, within the switching architecture shown in FIGS. 13A and B, only 120 Gbps port cards can be supported (assuming that each serial link transports 12 Gbps of bandwidth).
- each chassis contains eight half-height switch cards, each chassis is capable of housing only ten port cards.
- a feature of the switching architecture shown in FIGS. 13A and B is the fact that the same switch card used in the FIG. 11 chassis and the FIG. 12 chassis can also be used for all the switch cards in the FIGS. 13A and B system. It should be noted that only half of the switching functionality may be used on the switch cards used to construct the second stage. This is because the interconnects between the first and second stages, and between the second and third stages, are all done optically, and only half of the 120 ⁇ 120 switch chip on the second stage switch card may be able to be accessed optically. It can also be noted that the same chassis (and its associated back plane) can be used to support the systems shown in FIG. 3 , FIG. 4 , FIG. 6 , FIG. 11 , FIG. 12 , and FIGS. 13A and B. This common chassis utilizes the common backplane interconnect that is illustrated in FIG. 2 .
- All thirty-two switch cards can be housed within the same four chassis as the forty 120 Gbps port cards.
- An exemplary placement of the switch cards (following the nomenclature of FIGS. 13A and B) is shown in FIG. 13C .
- the sixteen center stage (second stage) switch cards are placed in the second set of multi-functionality card slots.
- the second set of multi-functionality card slots are used to create a larger switching system instead of creating more switching capacity for each port card slot.
- FIG. 13C it can also be noted that the center switch cards associated with “Plane 1 ” in FIG. 13A are placed in the second set of multi-functionality card slots of chassis 1 , the center switch cards associated with “Plane 2 ” in FIG. 13A are placed in the second set of multi-functionality card slots of chassis 2 , the center switch cards associated with “Plane 3 ” in FIG. 13B are placed in the second set of multi-functionality card slots of chassis 3 , and the center switch cards associated with “Plane 4 ” in FIG. 13B are placed in the second set of multi-functionality card slots of chassis 4 .
- FIGS. 14A , B, and C show an exemplary interconnection of eight chassis by utilizing a three stage switching architecture.
- FIGS. 14A and B show all the switch cards needed to interconnect the eight chassis (the port cards are not shown, for simplicity).
- a total of thirty-two half-height switch cards and 16 full height switch cards are used in this example switching architecture shown in FIGS. 14A , B, and C.
- FIGS. 14A and B depict the “unfolded” view of the three stage Clos switch.
- the first and third stages of the Clos switch are housed on the same card (for example switch card 1410 -SC 1 A and 1410 -SC 1 B).
- the 120 ⁇ 120 switch chip on switch card 1 A/ 1 B is logically partitioned into a first 60 ⁇ 60 switch function (used for the first stage), and a second 60 ⁇ 60 switch function (used for the third stage).
- Each of the sixteen second stage functions reside on a separate card in the example embodiment shown in FIGS. 14A , B, and C.
- First and third stages may be connected to the port cards via electrical printed circuit board (PCB) traces, while the connections between the first and second stages and the connections between the second and third stages may be done using optical interconnects (via front panel pluggable optics).
- PCB electrical printed circuit board
- the size of the center switch card (in some implementations) must be increased in order to accommodate twice as many optical interfaces through the front panel (compared to the center switch card that supports 60 inputs and 60 outputs).
- each of the eight chassis is still able to support ten 120 G port cards.
- Switching planes 1 and 2 are shown in FIG. 14A and switching planes 3 and 4 are shown in FIG. 14B .
- Each switching plane is used to switch five of the serial links to and from each port card (for a total of 20 serial links to and from each port card). Because only 20 serial links from each port card are switched, in the switching architecture shown in FIGS. 14A , B, and C, only 120 Gbps port cards can be supported.
- all forty-eight switch cards can be housed within the same eight chassis as the eighty 120 Gbps port cards.
- the placement of the switch cards (following the nomenclature of FIGS. 14A and B) is shown in FIG. 14C .
- the sixteen center stage (second stage) switch cards are placed in the second set of multi-functionality card slots.
- the second set of multi-functionality card slots are used to create a larger switching system instead of creating more switching capacity for each port card slot.
- FIG. 14C it can be noted that the center switch cards associated with “Plane 1 ” in FIG. 14A are placed in the second set of multi-functionality card slots of chassis 1 , the center switch cards associated with “Plane 2 ” in FIG. 14A are placed in the second set of multi-functionality card slots of chassis 2 , the center switch cards associated with “Plane 3 ” in FIG. 14B are placed in the second set of multi-functionality card slots of chassis 3 , and the center switch cards associated with “Plane 4 ” in FIG. 14B are placed in the second set of multi-functionality card slots of chassis 14 . All center stage switch cards are interconnected to the associated switch cards located in the first set of multi-functionality card slots using front panel pluggable optics and their associated parallel fiber optic cables.
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Mounting Of Printed Circuit Boards And The Like (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
Description
Claims (24)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/368,045 US9047062B2 (en) | 2011-05-18 | 2012-02-07 | Multi-configurable switching system using multi-functionality card slots |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201161487434P | 2011-05-18 | 2011-05-18 | |
US13/368,045 US9047062B2 (en) | 2011-05-18 | 2012-02-07 | Multi-configurable switching system using multi-functionality card slots |
Publications (2)
Publication Number | Publication Date |
---|---|
US20120293934A1 US20120293934A1 (en) | 2012-11-22 |
US9047062B2 true US9047062B2 (en) | 2015-06-02 |
Family
ID=47174759
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/368,025 Abandoned US20120293969A1 (en) | 2011-05-18 | 2012-02-07 | Method and apparatus for providing a mechanical means to support card slots capable of accepting cards of multiple form factors |
US13/368,045 Active 2033-12-15 US9047062B2 (en) | 2011-05-18 | 2012-02-07 | Multi-configurable switching system using multi-functionality card slots |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/368,025 Abandoned US20120293969A1 (en) | 2011-05-18 | 2012-02-07 | Method and apparatus for providing a mechanical means to support card slots capable of accepting cards of multiple form factors |
Country Status (1)
Country | Link |
---|---|
US (2) | US20120293969A1 (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120293969A1 (en) | 2011-05-18 | 2012-11-22 | Tellabs Operations, Inc. | Method and apparatus for providing a mechanical means to support card slots capable of accepting cards of multiple form factors |
US10036396B2 (en) * | 2013-03-08 | 2018-07-31 | Coriant Operations, Inc. | Field configurable fan operational profiles |
US9008514B2 (en) | 2013-06-22 | 2015-04-14 | Mark E. Boduch | Method and apparatus for construction of compact optical nodes using wavelength equalizing arrays |
US20150009639A1 (en) * | 2013-07-02 | 2015-01-08 | Kimon Papakos | System and method for housing circuit boards of different physical dimensions |
US9823703B2 (en) | 2014-03-27 | 2017-11-21 | Google Inc. | Modules and connections for modules to couple to a computing device |
KR20160142368A (en) | 2014-04-07 | 2016-12-12 | 구글 인코포레이티드 | Systems for enabling chassis-coupled modular mobile electronic devices |
US9717045B2 (en) * | 2014-04-07 | 2017-07-25 | Google Inc. | Systems for enabling modular mobile electronic devices |
KR20160142875A (en) | 2014-04-07 | 2016-12-13 | 구글 인코포레이티드 | Systems and methods for power management of a modular mobile electronic device |
US10042402B2 (en) | 2014-04-07 | 2018-08-07 | Google Llc | Systems and methods for thermal management of a chassis-coupled modular mobile electronic device |
US9781495B2 (en) | 2014-08-14 | 2017-10-03 | Huawei Technologies Co., Ltd. | Optical switch architecture |
CN106462195A (en) | 2014-08-22 | 2017-02-22 | 谷歌公司 | Systems for module interfacing of modular mobile electronic devices |
US9614942B2 (en) | 2014-08-22 | 2017-04-04 | Google Inc. | Systems and methods for tangible configuration of a modular mobile electronic device |
US9674320B2 (en) | 2014-08-22 | 2017-06-06 | Google Inc. | Systems and methods for enabling radio-frequency communication of a modular mobile electronic device |
US20160337731A1 (en) * | 2015-05-13 | 2016-11-17 | Huawei Technologies Co., Ltd. | System and Method for Photonic Switching |
US10237204B2 (en) * | 2015-12-20 | 2019-03-19 | Mellanox Technologies Tlv Ltd. | Switch chassis with flexible topology |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5172306A (en) * | 1991-04-01 | 1992-12-15 | E-Systems, Inc. | Adaptive card mounting system |
US20050227505A1 (en) * | 2004-04-13 | 2005-10-13 | Edoardo Campini | Switching system |
US20060104271A1 (en) * | 2004-11-17 | 2006-05-18 | Samsung Electronics Co., Ltd. | Method and system for switching packets in a communication network |
US7403473B1 (en) * | 2003-12-29 | 2008-07-22 | Nortel Networks Limited | Method and apparatus for accelerated protection switching in a multi-switch network element |
US20080233858A1 (en) | 2007-02-22 | 2008-09-25 | Tellabs Operations, Inc. | Apparatus, system, and method for venting a chassis |
US7653776B2 (en) * | 2005-12-14 | 2010-01-26 | Apple Inc. | Method and apparatus for selectively switching IC ports to card slots through the use of three switches per switch group |
US20110262135A1 (en) | 2009-10-18 | 2011-10-27 | Tellabs Operations, Inc. | Method and apparatus for increasing overall aggregate capacity of a network |
US20120293969A1 (en) | 2011-05-18 | 2012-11-22 | Tellabs Operations, Inc. | Method and apparatus for providing a mechanical means to support card slots capable of accepting cards of multiple form factors |
US8369321B2 (en) * | 2010-04-01 | 2013-02-05 | Juniper Networks, Inc. | Apparatus and methods related to the packaging and cabling infrastructure of a distributed switch fabric |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6637845B2 (en) * | 2001-02-28 | 2003-10-28 | Adc Telecommunications, Inc. | Telecommunications chassis and card with flame spread containment |
US6721190B1 (en) * | 2002-01-10 | 2004-04-13 | Cisco Technology, Inc. | Board alignment tab |
-
2012
- 2012-02-07 US US13/368,025 patent/US20120293969A1/en not_active Abandoned
- 2012-02-07 US US13/368,045 patent/US9047062B2/en active Active
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5172306A (en) * | 1991-04-01 | 1992-12-15 | E-Systems, Inc. | Adaptive card mounting system |
US7403473B1 (en) * | 2003-12-29 | 2008-07-22 | Nortel Networks Limited | Method and apparatus for accelerated protection switching in a multi-switch network element |
US20050227505A1 (en) * | 2004-04-13 | 2005-10-13 | Edoardo Campini | Switching system |
US20060104271A1 (en) * | 2004-11-17 | 2006-05-18 | Samsung Electronics Co., Ltd. | Method and system for switching packets in a communication network |
US7653776B2 (en) * | 2005-12-14 | 2010-01-26 | Apple Inc. | Method and apparatus for selectively switching IC ports to card slots through the use of three switches per switch group |
US20080233858A1 (en) | 2007-02-22 | 2008-09-25 | Tellabs Operations, Inc. | Apparatus, system, and method for venting a chassis |
US7916502B2 (en) | 2007-02-22 | 2011-03-29 | Tellabs Operations, Inc. | Stackable cable tray |
US20110132855A1 (en) | 2007-02-22 | 2011-06-09 | Tellabs Operations, Inc. | Stackable cable tray |
US8328026B2 (en) | 2007-02-22 | 2012-12-11 | Tellabs Operations, Inc. | Apparatus and method for configuring a dual rack-mountable chassis |
US20110262135A1 (en) | 2009-10-18 | 2011-10-27 | Tellabs Operations, Inc. | Method and apparatus for increasing overall aggregate capacity of a network |
US8369321B2 (en) * | 2010-04-01 | 2013-02-05 | Juniper Networks, Inc. | Apparatus and methods related to the packaging and cabling infrastructure of a distributed switch fabric |
US20120293969A1 (en) | 2011-05-18 | 2012-11-22 | Tellabs Operations, Inc. | Method and apparatus for providing a mechanical means to support card slots capable of accepting cards of multiple form factors |
Also Published As
Publication number | Publication date |
---|---|
US20120293969A1 (en) | 2012-11-22 |
US20120293934A1 (en) | 2012-11-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9047062B2 (en) | Multi-configurable switching system using multi-functionality card slots | |
US9325604B2 (en) | System and method for data center optical connection | |
US10467170B2 (en) | Storage array including a bridge module interconnect to provide bridge connections to different protocol bridge protocol modules | |
US9210487B1 (en) | Implementation of a large-scale multi-stage non-blocking optical circuit switch | |
US6981078B2 (en) | Fiber channel architecture | |
US8116332B2 (en) | Switch arbitration | |
US7388757B2 (en) | Monolithic backplane having a first and second portion | |
KR102309907B1 (en) | Method and apparatus to manage the direct interconnect switch wiring and growth in computer networks | |
US7616889B2 (en) | Byte-wide optical backplane switching method | |
US8934483B2 (en) | Data center switch | |
US20110262135A1 (en) | Method and apparatus for increasing overall aggregate capacity of a network | |
US20040023558A1 (en) | Mid-connect architecture with point-to-point connections for high speed data transfer | |
US8644667B2 (en) | Backplane structure allowing setting of equal peer-to-peer communication distance between two blades arbitrarily inserted into a plurality of fixedly arranged slots | |
US20150058518A1 (en) | Modular server system, i/o module and switching method | |
US6894905B2 (en) | Communication device plane having a high-speed bus | |
US10674625B1 (en) | Rack sideplane for interconnecting devices | |
US10928601B2 (en) | Network topology modules | |
US20240168234A1 (en) | Fabric network modules | |
US8989549B2 (en) | Topology-defining cards for optically interconnected telecommunication systems | |
US7525808B2 (en) | Device, system, and method of flexible hardware connectivity | |
EP4372439A1 (en) | Fabric modules for high-radix networks | |
Collier | Satellite based optical backplanes and the next generation space interconnect standard (NGSIS): a modular open standards approach for high performance interconnects for space | |
WO2024107998A1 (en) | Fabric modules for server to switch connections |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: TELLABS OPERATIONS, INC., ILLINOIS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BODUCH, MARK;PAPAKOS, KIMON;KANGAS, BRADLEY RONALD;AND OTHERS;SIGNING DATES FROM 20120114 TO 20120206;REEL/FRAME:027667/0101 |
|
AS | Assignment |
Owner name: CERBERUS BUSINESS FINANCE, LLC, AS COLLATERAL AGEN Free format text: SECURITY AGREEMENT;ASSIGNORS:TELLABS OPERATIONS, INC.;TELLABS RESTON, LLC (FORMERLY KNOWN AS TELLABS RESTON, INC.);WICHORUS, LLC (FORMERLY KNOWN AS WICHORUS, INC.);REEL/FRAME:031768/0155 Effective date: 20131203 |
|
AS | Assignment |
Owner name: TELECOM HOLDING PARENT LLC, CALIFORNIA Free format text: ASSIGNMENT FOR SECURITY - - PATENTS;ASSIGNORS:CORIANT OPERATIONS, INC.;TELLABS RESTON, LLC (FORMERLY KNOWN AS TELLABS RESTON, INC.);WICHORUS, LLC (FORMERLY KNOWN AS WICHORUS, INC.);REEL/FRAME:034484/0740 Effective date: 20141126 |
|
AS | Assignment |
Owner name: CORIANT OPERATIONS, INC., ILLINOIS Free format text: CHANGE OF NAME;ASSIGNOR:TELLABS OPERATIONS, INC.;REEL/FRAME:035532/0094 Effective date: 20141015 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
AS | Assignment |
Owner name: TELECOM HOLDING PARENT LLC, CALIFORNIA Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE REMOVE APPLICATION NUMBER 10/075,623 PREVIOUSLY RECORDED AT REEL: 034484 FRAME: 0740. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT FOR SECURITY --- PATENTS;ASSIGNORS:CORIANT OPERATIONS, INC.;TELLABS RESTON, LLC (FORMERLY KNOWN AS TELLABS RESTON, INC.);WICHORUS, LLC (FORMERLY KNOWN AS WICHORUS, INC.);REEL/FRAME:042980/0834 Effective date: 20141126 |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 4 |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 8 |